The Economic Nebulizer Set delivers medication effectively. It is comparable to the sets that come with nebulizer/compressors when they are initially purchased. It is also convenient to have three of them around, in case a piece is lost, broken or just not cleaned since the last usage. The Economic Nebulizer Set will not, however, deliver medication as quickly as the PARI LC Sprint or PARI LC PLUS does. For most people with asthma, the additional cost of purchasing the PARI LC Sprint or PARI LC PLUS is worth it to benefit from the increased effectiveness of their medication, not to mention reducing the time it takes for each treatment.